liquiphant ftl51b operating instructions · 2020. 7. 1. · products solutions services operating...

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Operating InstructionsLiquiphant FTL51BVibronicLimit switch for liquids

BA01894F/00/EN/02.19714409782019-06-28

Valid as of version01.00.zz

Liquiphant FTL51B

2 Endress+Hauser

Order code:

Ext. ord. cd.:

Ser. no.:

www.endress.com/deviceviewer Endress+Hauser

Operations App

XXXXXXXXXXXX

XXXXX-XXXXXX

XXX.XXXX.XX

Serial number

1.

3.

2.

A0023555

Liquiphant FTL51B Table of contents

Endress+Hauser 3

Table of contents

1 About this document . . . . . . . . . . . . . . . . 51.1 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1.1 Safety symbols . . . . . . . . . . . . . . . . . . 51.1.2 Electrical symbols . . . . . . . . . . . . . . . . 51.1.3 Symbols for certain types of

information . . . . . . . . . . . . . . . . . . . . 51.1.4 Symbols in graphics . . . . . . . . . . . . . . . 5

2 Basic safety instructions . . . . . . . . . . . . 62.1 Requirements for the personnel . . . . . . . . . . . . 62.2 Designated use . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2.1 Incorrect use . . . . . . . . . . . . . . . . . . . . 62.3 Workplace safety . . . . . . . . . . . . . . . . . . . . . . . 62.4 Operational safety . . . . . . . . . . . . . . . . . . . . . . 62.5 Product safety . . . . . . . . . . . . . . . . . . . . . . . . . 72.6 IT security . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 Product description . . . . . . . . . . . . . . . . . 73.1 Product design . . . . . . . . . . . . . . . . . . . . . . . . 8

4 Incoming acceptance and productidentification . . . . . . . . . . . . . . . . . . . . . . . 9

4.1 Incoming acceptance . . . . . . . . . . . . . . . . . . . . 94.2 Product identification . . . . . . . . . . . . . . . . . . . . 9

4.2.1 Nameplate . . . . . . . . . . . . . . . . . . . . . 94.2.2 Manufacturer address . . . . . . . . . . . . . 9

4.3 Storage and transport . . . . . . . . . . . . . . . . . . 104.3.1 Storage conditions . . . . . . . . . . . . . . . 104.3.2 Transporting the device . . . . . . . . . . . 10

5 Installation . . . . . . . . . . . . . . . . . . . . . . . 115.1 Mounting conditions . . . . . . . . . . . . . . . . . . . 11

5.1.1 Taking the switch point intoconsideration . . . . . . . . . . . . . . . . . . 11

5.1.2 Take viscosity into consideration . . . . 125.1.3 Avoiding buildup . . . . . . . . . . . . . . . . 135.1.4 Take clearance into consideration . . . 135.1.5 Support the device . . . . . . . . . . . . . . . 145.1.6 Weld-in adapter with leakage hole . . 14

5.2 Mounting the measuring device . . . . . . . . . . . 145.2.1 Required tools . . . . . . . . . . . . . . . . . . 145.2.2 Installation . . . . . . . . . . . . . . . . . . . . 15

5.3 Sliding sleeves . . . . . . . . . . . . . . . . . . . . . . . 165.4 Post-installation check . . . . . . . . . . . . . . . . . . 16

6 Electrical connection . . . . . . . . . . . . . . 176.1 Connection conditions . . . . . . . . . . . . . . . . . . 17

6.1.1 Cover with securing screw . . . . . . . . . 176.1.2 Connecting protective earth (PE) . . . . 17

6.2 Connecting the measuring device . . . . . . . . . . 176.2.1 2-wire AC (electronic insert

FEL61) . . . . . . . . . . . . . . . . . . . . . . . 176.2.2 3-wire DC-PNP (electronic insert

FEL62) . . . . . . . . . . . . . . . . . . . . . . . 196.2.3 Universal current connection with

relay output (electronic insertFEL64) . . . . . . . . . . . . . . . . . . . . . . . 21

6.2.4 DC connection, relay output(electronic insert FEL64 DC) . . . . . . . 23

6.2.5 PFM output (electronic insertFEL67) . . . . . . . . . . . . . . . . . . . . . . . 25

6.2.6 2-wire NAMUR > 2.2 mA/< 1.0 mA(electronic insert FEL68) . . . . . . . . . . 27

6.2.7 Bluetooth module VU121(optional) . . . . . . . . . . . . . . . . . . . . . 29

6.2.8 LED module VU120 (optional) . . . . . . 306.2.9 Cable entry . . . . . . . . . . . . . . . . . . . . 30

6.3 Post-connection check . . . . . . . . . . . . . . . . . . 31

7 Operation options . . . . . . . . . . . . . . . . . 327.1 Overview of operation options . . . . . . . . . . . . 32

7.1.1 Operating concept . . . . . . . . . . . . . . 327.1.2 Functional test using the button on

the electronic insert . . . . . . . . . . . . . . 327.1.3 Functional test of the electronic

switch with a test magnet . . . . . . . . . 357.1.4 Heartbeat diagnostics and

verification with Bluetooth® wirelesstechnology . . . . . . . . . . . . . . . . . . . . 36

7.2 LED module VU120 (optional) . . . . . . . . . . . . 377.2.1 Configuration and sensor status . . . . . 37

8 Commissioning . . . . . . . . . . . . . . . . . . . . 378.1 Function check . . . . . . . . . . . . . . . . . . . . . . . 378.2 Switching on the measuring device . . . . . . . . . 388.3 Establishing a connection via SmartBlue

(app) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388.3.1 SmartBlue (app) . . . . . . . . . . . . . . . . 38

9 Operation . . . . . . . . . . . . . . . . . . . . . . . . . 409.1 Diagnostics menu . . . . . . . . . . . . . . . . . . . . . 40

9.1.1 "Diagnostics" menu . . . . . . . . . . . . . . . 409.1.2 "Application" menu . . . . . . . . . . . . . . 409.1.3 "System" menu . . . . . . . . . . . . . . . . . . 41

9.2 Heartbeat Verification . . . . . . . . . . . . . . . . . . 429.3 Recurrent testing for SIL/WHG (German

Water Resources Act) devices . . . . . . . . . . . . . 42

10 Diagnostics and troubleshooting . . . 4210.1 Diagnostic information via light emitting

diodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4310.1.1 LED at electronic insert . . . . . . . . . . . 43

Table of contents Liquiphant FTL51B

4 Endress+Hauser

10.1.2 SmartBlue . . . . . . . . . . . . . . . . . . . . . 43

11 Maintenance . . . . . . . . . . . . . . . . . . . . . . 4411.1 Maintenance tasks . . . . . . . . . . . . . . . . . . . . 44

11.1.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . 44

12 Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4512.1 General information . . . . . . . . . . . . . . . . . . . 45

12.1.1 Repair concept . . . . . . . . . . . . . . . . . 4512.1.2 Repair of Ex-certified devices . . . . . . . 45

12.2 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . 4512.3 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4512.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

13 Accessories . . . . . . . . . . . . . . . . . . . . . . . 4713.1 Device-specific accessories . . . . . . . . . . . . . . . 47

13.1.1 Test magnet . . . . . . . . . . . . . . . . . . . 4713.1.2 Weather protection cover for dual-

compartment housing, aluminum . . . 4713.1.3 Weather protection cover for single-

compartment housing, metal . . . . . . . 4713.1.4 Plug-in jack . . . . . . . . . . . . . . . . . . . . 4813.1.5 Additional modules . . . . . . . . . . . . . . 4813.1.6 Sliding sleeves for unpressurized

operation . . . . . . . . . . . . . . . . . . . . . 4913.1.7 High pressure sliding sleeves . . . . . . . 50

14 Technical data . . . . . . . . . . . . . . . . . . . . 5214.1 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

14.1.1 Measured variable . . . . . . . . . . . . . . 5214.1.2 Measuring range . . . . . . . . . . . . . . . 52

14.2 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5214.2.1 Output and input variants . . . . . . . . . 5214.2.2 Output signal . . . . . . . . . . . . . . . . . . 5314.2.3 Ex connection data . . . . . . . . . . . . . . 53

14.3 Environment . . . . . . . . . . . . . . . . . . . . . . . . . 5314.3.1 Ambient temperature range . . . . . . . 5314.3.2 Storage temperature . . . . . . . . . . . . . 5414.3.3 Humidity . . . . . . . . . . . . . . . . . . . . . 5414.3.4 Operating altitude . . . . . . . . . . . . . . . 5514.3.5 Climate class . . . . . . . . . . . . . . . . . . 5514.3.6 Degree of protection . . . . . . . . . . . . . 5514.3.7 Vibration resistance . . . . . . . . . . . . . 5514.3.8 Shock resistance . . . . . . . . . . . . . . . . 5514.3.9 Mechanical load . . . . . . . . . . . . . . . . 5614.3.10 Electromagnetic compatibility . . . . . . 56

14.4 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5614.4.1 Process temperature range . . . . . . . . 5614.4.2 Thermal shock . . . . . . . . . . . . . . . . . 5614.4.3 Process pressure range . . . . . . . . . . . 5614.4.4 Test pressure . . . . . . . . . . . . . . . . . . 5714.4.5 Density . . . . . . . . . . . . . . . . . . . . . . 5714.4.6 Pressure tightness . . . . . . . . . . . . . . 58

14.5 Additional technical data . . . . . . . . . . . . . . . . 58

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Liquiphant FTL51B About this document

Endress+Hauser 5

1 About this document

1.1 Symbols

1.1.1 Safety symbolsDANGER

This symbol alerts you to a dangerous situation. Failure to avoid this situation will result inserious or fatal injury.

WARNING

This symbol alerts you to a dangerous situation. Failure to avoid this situation can result inserious or fatal injury.

CAUTION

This symbol alerts you to a dangerous situation. Failure to avoid this situation can result inminor or medium injury.

NOTICE

This symbol contains information on procedures and other facts which do not result inpersonal injury.

1.1.2 Electrical symbols Ground connection

Grounded clamp, which is grounded via a grounding system.

Protective earth (PE)Ground terminals, which must be grounded prior to establishing any other connections.The ground terminals are located on the inside and outside of the device.

1.1.3 Symbols for certain types of information Permitted

Procedures, processes or actions that are permitted.

ForbiddenProcedures, processes or actions that are forbidden.

TipIndicates additional information

Reference to documentationA Reference to another section

1. , 2. , 3. Series of steps

1.1.4 Symbols in graphicsA, B, C ... View

1, 2, 3 ... Item numbers

- Hazardous area

. Safe area (non-hazardous area)

Basic safety instructions Liquiphant FTL51B

6 Endress+Hauser

2 Basic safety instructions

2.1 Requirements for the personnelThe personnel must fulfill the following requirements to carry out the necessary tasks,e. g., commissioning and maintenance:‣ Trained, qualified specialists must have a relevant qualification for the specific function

and task‣ Are authorized by the plant owner/operator‣ Are familiar with federal/national regulations‣ Must have read and understood the instructions in the manual and supplementary

documentation‣ Follow instructions and comply with conditions

2.2 Designated use• Only use the measuring device as a limit switch for liquids• Improper use can pose hazards• Ensure that the measuring device is free of defects while it is in operation

• Use the measuring device only for media to which the process-wetted materials have anadequate level of resistance

• Do not exceed or drop below the limit values for the measuring device TI01403F/00/EN

2.2.1 Incorrect useThe manufacturer is not liable for damage caused by improper or non-designated use.

Residual risksDue to heat transfer from the process, the temperature of the electronics housing and theassemblies contained therein may rise to 80 °C (176 °F) during operation.

Danger of burns from contact with surfaces!‣ If necessary, ensure protection against contact to prevent burns.

For requirements concerning functional safety in accordance with IEC 61508, theassociated SIL documentation must be observed.

2.3 Workplace safetyFor work on and with the device:‣ Wear the required protective equipment according to federal/national regulations.

2.4 Operational safetyRisk of injury!‣ Operate the device only if it is in proper technical condition, free from errors and faults.‣ The operator is responsible for ensuring failure-free operation of the device.

Modifications to the deviceUnauthorized modifications to the device are not permitted and can lead to unforeseeabledangers.‣ If, despite this, modifications are required, consult with Endress+Hauser.

Liquiphant FTL51B Product description

Endress+Hauser 7

RepairTo ensure continued operational safety and reliability:‣ Only perform repair work on the device if this is expressly permitted.‣ Observe federal/national regulations pertaining to the repair of an electrical device.‣ Use original spare parts and accessories from Endress+Hauser only.

2.5 Product safetyThis measuring device is designed in accordance with good engineering practice to meetstate-of-the-art safety requirements, has been tested, and left the factory in a condition inwhich it is safe to operate.

It meets general safety standards and legal requirements. It also complies with the ECdirectives listed in the device-specific EC Declaration of Conformity. Endress+Hauserconfirms this by affixing the CE mark to the device.

2.6 IT securityWe only provide a warranty if the device is installed and used as described in theOperating Instructions. The device has safety mechanisms integrated to prevent usersfrom inadvertently changing settings.

Provide additional protection for the device and data transfer to/from the device‣ IT security measures defined in the plant owner/operator's own security policy must be

implemented by plant owners/operators themselves.

3 Product descriptionPoint level switch for minimum or maximum detection.

Product description Liquiphant FTL51B

8 Endress+Hauser

3.1 Product design

1

2

3

4 5

A0036953

1 Product design

1 Housing with electronic insert and cover, optional Bluetooth module or LED module2 Optional spacer (temperature spacer or pressure-tight feedthrough (second line of defense))3 Compact probe design4 Probe design with pipe extension5 Probe design with short pipe

Identify the electronic insert via the order code on the nameplate.

Optional: Bluetooth module VU121 or LED module VU120

Contains

FCC ID:IC:

A0039257

2 Bluetooth module

A0039258

3 LED module

Liquiphant FTL51B Incoming acceptance and product identification

Endress+Hauser 9

4 Incoming acceptance and productidentification

4.1 Incoming acceptanceCheck the following during goods acceptance:

Are the order codes on the delivery note and the product sticker identical?

Are the goods undamaged?

Do the nameplate data match the ordering information on the delivery note?

If required (see nameplate): Are the Safety Instructions, e. g. XA, provided?

Is the device properly secured?

If one of these conditions is not met, please contact the manufacturer's sales office.

4.2 Product identificationThe measuring device can be identified in the following ways:• Nameplate data• Extended order code with breakdown of the device features on the delivery note• Enter serial number from nameplates in W@M Device Viewer

(www.endress.com/deviceviewer): All of the information on the measuring device isdisplayed along with an overview of the scope of technical documentation provided

• Enter the serial number on the nameplate into the Endress+Hauser Operations App oruse the Endress+Hauser Operations App to scan the 2-D matrix code (QR Code) on thenameplate

4.2.1 Nameplate

Order code: Ser. no.:

Ext. ord. cd.:

L:

FW:

Dev.Rev.:

Pmax:

0.83 W PNP

2

3

5

1

4

4

A0038187

4 Nameplate specifications

1 Manufacturer name and device name2 Manufacturer address3 Order number, external order code, serial number4 Technical data5 Approval-specific information

4.2.2 Manufacturer address

Endress+Hauser SE+Co. KGHauptstraße 179689 Maulburg, GermanyAddress of the manufacturing plant: See nameplate.

Incoming acceptance and product identification Liquiphant FTL51B

10 Endress+Hauser

4.3 Storage and transport

4.3.1 Storage conditionsUse original packaging.

Storage temperature–40 to +80 °C (–40 to +176 °F)optional: –52 °C (–62 °F), –60 °C (–76 °F)

4.3.2 Transporting the device• Transport the device to the measuring point in the original packaging• Hold the device by the housing, temperature spacer, flange or extension pipe• Do not bend, shorten or extend the tuning fork

A0034846

5 Handling the device during transportation

Liquiphant FTL51B Installation

Endress+Hauser 11

5 InstallationLWARNING

Loss of protection rating if the device is opened in a wet environment.‣ Only open the device in a dry environment!

1

A0037879

6 Installation in any position in a vessel, pipe or tank

1 Temperature spacer for tank with insulation and/or high process temperatures

5.1 Mounting conditions

5.1.1 Taking the switch point into considerationTypical switch points, depending on the orientation of the point level switch

(water +23 °C (+73 °F))

~1

3 (

0.5

) ~4

(0

.16

)

~1

2.5

(0

.49

)

D

A B C

D

D

A0037915

7 Typical switch points. Unit of measurement mm (in)

A Installation from aboveB Installation from belowC Installation from the sideD Switch point

Installation Liquiphant FTL51B

12 Endress+Hauser

5.1.2 Take viscosity into consideration

Low viscosity

> 25 (0.98)

D

A0033297

8 Installation example for low-viscosity liquids. Unit of measurement mm (in)

D Diameter of installation socket: at least 50 mm (2.0 in)

Low viscosity, e. g. water: < 2 000 mPa⋅s

It is permitted to position the tuning fork within the installation socket.

High viscosity

> 40 (1.57)

A0037348

9 Installation example for a highly viscous liquid. Unit of measurement mm (in)

NOTICEHighly viscous liquids may cause switching delays.‣ Make sure that the liquid can run off the tuning fork easily.‣ Deburr the socket surface.

High viscosity, e. g. viscous oils: < 10 000 mPa⋅s

The tuning fork must be located outside the installation socket!


Endress+Hauser 13

5.1.3 Avoiding buildup

A0033239

10 Installation examples for a highly viscous process medium

• Use short installation sockets to ensure that the turning fork can project freely into thevessel.

• Install preferably flush-mounted on vessels or in pipes.• Leave sufficient distance between the buildup expected on the tank wall and the tuning

fork.

5.1.4 Take clearance into consideration

A0033236

11 Take clearance into consideration

Allow sufficient space outside the tank for mounting, connection and settings involvingthe electronic insert.


14 Endress+Hauser

5.1.5 Support the device

A0031874

12 Support in the event of dynamic load

Support the device in the event of severe dynamic load. Maximum lateral loading capacityof the pipe extensions and sensors: 75 Nm (55 lbf ft).

5.1.6 Weld-in adapter with leakage hole316L

A0039230

13 Weld-in adapter with leakage hole

Weld in the welding neck in such a way that the leakage hole is pointing downwards. Thisenables any leaks to be detected quickly.

5.2 Mounting the measuring device

5.2.1 Required tools• Open-ended wrench for sensor installation• Screwdriver for electrical connection


Endress+Hauser 15

5.2.2 Installation

Horizontal installation in vesselsAlign the tuning fork with the marking

316L/G1

A0039125

14 Marking to align the tuning fork

Use the marking to align the tuning fork in such a way that medium can run off easily anddeposit buildup is avoided.

The following can be used as the marking:• Material specification, thread description or circle on the hexagonal nut or on the weld-

in adapter• The II symbol on the back of the flange or Tri-Clamp

Installing in pipes

A0034851

15 Marking and fork position

• Flow velocity up to 5 m/s with viscosity 1 mm2/s (cSt) and density 1 g/cm3 (SGU)Check for correct functioning in the event of other process medium conditions

• The marking on the adapter points in the flow direction; the flow is thus not severelyobstructed

• The marking can be identified while the device is installed

Screwing in the device

A0034852

16 Screwing in the device

• Turn by the hex bolt only, 15 to 30 Nm (11 to 22 lbf ft)• Do not turn at the housing!


16 Endress+Hauser

Aligning the cable entry

1.

2.

3 0.7 Nm3

3.

A0037347

17 Housing with external locking screw

The locking screw is not tightened when the device is delivered.

1. Release the external locking screw.

2. Turn the housing, align the cable entry.

3. Tighten the external locking screw.

5.3 Sliding sleeves See the "Accessories" section.

5.4 Post-installation check Is the measuring device undamaged (visual inspection)?

Does the measuring device conform to the measuring point specifications?

For example:• Process temperature• Process pressure• Ambient temperature range• Measuring range

Are the measuring point number and labeling correct (visual inspection)?

Is the measuring device adequately protected against precipitation and direct sunlight?

Is the device properly secured?

Liquiphant FTL51B Electrical connection

Endress+Hauser 17

6 Electrical connection

6.1 Connection conditions

6.1.1 Cover with securing screwCovers with a securing screw are available for devices for use in hazardous areas. Donot release the screw fully.

A0039520

18 Cover with securing screw

6.1.2 Connecting protective earth (PE)The protective earth conductor at the device must only be connected if the device'soperating voltage is ≥ 35 VDC or ≥ 16 VACeff.

When the device is used in hazardous areas, it must always be included in the potentialequalization of the system, irrespective of the operating voltage.

The plastic housing is available with or without an external protective earthconnection (PE).

6.2 Connecting the measuring device

6.2.1 2-wire AC (electronic insert FEL61)• Two-wire AC version• Switches the load directly into the power supply circuit via an electronic switch; always

connect in series with a load.• Functional testing without level change

A functional test can be performed on the device using the test button on the electronicinsert.

Supply voltageU = 19 to 253 VAC

Residual voltage when switched through: maximum 12 V

Pay attention to the following as per IEC/EN61010-1: Provide a suitable circuitbreaker for the device, and limit the current to 1 A, e. g. by installing a 1 A fuse (slow-blow) in the line (not the neutral wire) of the supply circuit.

Power consumptionP ≤ 2 VA

Electrical connection Liquiphant FTL51B

18 Endress+Hauser

Current consumptionResidual current when blocked: I ≤ 3.8 mA

The red LED flashes in the event of an overload or short-circuit. Check for an overload orshort-circuit every 5 seconds. The test is deactivated after 60 seconds.

Power output and load current• Max 89 VA/253 V (350 mA); max 8.4 VA/24 V (350 mA)• Min 2.5 VA/253 V (10 mA); min ≥ 0.5 VA/24 V (20 mA)• With overload and short-circuit protection.

Behavior of output signal• OK status: load on (switched through)• Demand mode: load off (blocked)• Alarm: load off (blocked)

Terminal assignmentAlways connect an external load. The electronic insert has integrated short-circuitprotection.

!

>0,5

COM

NL1

1

2

MIN

MAX >0,7

U 19...253 V AC

I max: 350 mA

~~

1 A

L1 NPE

K

1 2

A0036060

19 2-wire AC, electronic insert FEL61


Endress+Hauser 19

Behavior of switch output and signaling

MAX

RD YE GN

MIN

K

K

K

K

K

(N)

(N)

(N)

(N)

(N)

IL

IL

<3.8 mA

<3.8 mA

<3.8 mA

2

2

2

2

2

1

1

1

1

1

L1

L1

L1

L1

L1

ΔU

ΔU

A0031901

20 Behavior of switch output and signaling, electronic insert FEL61

MAXDIP switch for setting MAX safety modeMIN DIP switch for setting MIN safety modeRD LED, red, for warning or alarmYE LED, yellow, switch statusGN LED, green, operational status, device onIL Load current switched through

6.2.2 3-wire DC-PNP (electronic insert FEL62)• Three-wire DC version• Preferably in conjunction with programmable logic controllers (PLC), DI modules as per

EN 61131-2. Positive signal at switch output of electronics module (PNP)• Functional testing without level change

A functional test can be performed on the device using the test button on the electronicinsert or using the test magnet with the housing closed.

Supply voltage

LWARNINGFailure to use the prescribed power unit.Risk of fatal injury due to electric shock!‣ The FEL62 may only be powered by devices with safe galvanic isolation, as per

IEC 61010-1.

U =10 to 55 VDC

Pay attention to the following as per IEC/EN61010-1: Provide a suitable circuitbreaker for the device, and limit the current to 500 mA, e. g. by installing a 0.5 A fuse(slow-blow) in the line (not the neutral wire) of the supply circuit.

Power consumptionP ≤ 0.5 W

Current consumptionI ≤ 10 mA (without load)

The red LED flashes in the event of an overload or short-circuit.


20 Endress+Hauser

Load currentI ≤ 350 mA with overload and short-circuit protection

Capacitance loadC ≤ 0.5 µF at 55 V, C ≤ 1.0 µF at 24 V

Residual currentI < 100 µA (with transistor blocked)

Residual voltageU < 3 V (with transistor switched through)

Behavior of output signal• OK status: switched through• Demand mode: blocked• Alarm: blocked

Terminal assignment

!

U = 10...55 V DC

I max: 350 mA

1

3L-L+

COM

MIN

MAX >0,7

>0,5

1

3

0.5 A

L+ L-

I 350 mAmax

U 55 Vmax

K

K

IL

PE

431

21

34

M121 2 3

BA

L+ L-

K

A0036061

21 3-wire DC-PNP, electronic insert FEL62

A Connection wiring with terminalsB Connection wiring with M12 connector in housing as per EN61131-2 standard


Endress+Hauser 21


MAX

RD YE GN

MIN

K

K

K

(L–)

(L–)

(L–)

IL

<100 µA

IL

3

3

3

1

1

1

L+

L+

L+

ΔU

ΔU

K

(L–)<100 µA

31L+

(L–)<100 µA

31L+

K

A0033508


MAXDIP switch for setting MAX safety modeMIN DIP switch for setting MIN safety modeRD LED, red, for warning or alarmYE LED, yellow, switch statusGN LED, green, operational status, device onIL Load current switched through

6.2.3 Universal current connection with relay output (electronicinsert FEL64)

• Switches the loads via 2 potential-free changeover contacts• Two galvanically isolated change-over contacts (DPDT), both change-over contacts

switch simultaneously• Functional testing without level change. A functional test can be performed on the

device using the test button on the electronic insert or using the test magnet with thehousing closed.

LWARNINGIn the event of an error, the electronic insert can exceed the limit temperature fortouchable surfaces, resulting in a risk of burns.‣ Do not touch the electronics in the event of an error!

Supply voltageU = 19 to 253 VAC/19 to 55 VDC

Pay attention to the following as per IEC/EN61010-1: Provide a suitable circuitbreaker for the device, and limit the current to 500 mA, e. g. by installing a 0.5 A fuse(slow-blow) in the line (not the neutral wire) of the supply circuit.

Power consumptionP < 25 VA,< 1.3 W

Connectable loadLoads switched via 2 potential-free changeover contacts (DPDT)

• IAC ≤ 6 A (Ex de 4 A), U~ ≤ AC 253 V; P~ ≤ 1 500 VA, cos φ = 1, P~ ≤ 750 VA, cos φ > 0.7• IDC ≤ 6 A (Ex de 4 A) to DC 30 V, I DC ≤ 0.2 A to 125 V


22 Endress+Hauser

According to IEC 61010: the sum of the voltages of the relay outputs and power supply≤ 300 V

Preferably use electronic insert FEL62 DC PNP for low DC current loads, e. g. connection toa PLC.

Relay contact material: silver/nickel AgNi 90/10

When connecting a device with high inductance, fit a spark suppressor to protect the relaycontact. Depending on the connected load, a fine-wire fuse protects the relay contact inthe event of a short-circuit.

Both relay contacts switch simultaneously.

Behavior of output signal• OK status: relay energized• Demand mode: relay de-energized• Alarm: relay de-energized

Terminal assignment

L1 N 4

3 5 8

7

6U = 19...55 V DC

U 19...253 V AC~~

!

0.5 A

1

2 2

L1

L+

NO NONC NCC CN

L-

PE

1 2 3 64 75 8

MIN

>0,7MAX

>0,5

COM

A0036062

23 Universal current connection with relay output, electronic insert FEL64

1 When bridged, the relay output works using NPN logic.2 Connectable load


Endress+Hauser 23


3 54

3 54

6 87

6 87

3 54

3

3

5

5

4

4

6 87

6

6

8

8

7

7

MAX

RD YE GN

MIN

A0033513


MAXDIP switch for setting MAX safety modeMIN DIP switch for setting MIN safety modeRD LED, red, for alarmYE LED, yellow, switch statusGN LED, green, operational status, device on

6.2.4 DC connection, relay output (electronic insert FEL64 DC)• Switches the loads via 2 potential-free changeover contacts• Two galvanically isolated change-over contacts (DPDT), both change-over contacts

switch simultaneously• Functional testing without level change. Functional testing of the entire device can be

performed using the test button on the electronic insert or with the test magnet with thehousing closed.

Supply voltageU = 9 to 20 VDC

Pay attention to the following as per IEC/EN61010-1: Provide a suitable circuitbreaker for the device, and limit the current to 500 mA, e. g. by installing a 0.5 A fuse(slow-blow) in the power circuit.

Power consumptionP < 1.0 W

Connectable loadLoads switched via 2 potential-free changeover contacts (DPDT)

• IAC ≤ 6 A (Ex de 4 A), U~ ≤ AC 253 V; P~ ≤ 1 500 VA, cos φ = 1, P~ ≤ 750 VA, cos φ > 0.7• IDC ≤ 6 A (Ex de 4 A) to DC 30 V, I DC ≤ 0.2 A to 125 V

According to IEC 61010: the sum of the voltages of the relay outputs and power supply≤ 300 V

Preferably use electronic insert FEL62 DC PNP for low DC current loads, e. g. connection toa PLC.

Relay contact material: silver/nickel AgNi 90/10


24 Endress+Hauser

When connecting a device with high inductance, fit a spark suppressor to protect the relaycontact. Depending on the connected load, a fine-wire fuse protects the relay contact inthe event of a short-circuit.

Behavior of output signal• OK status: relay energized• Demand mode: relay de-energized• Alarm: relay de-energized

Terminal assignment

L1 N 4

3 5 8

7

6U = 9...20 V DC

!

0.5 A

1

2 2

L1

L+

NO NONC NCC CN

L-

PE

1 2 3 64 75 8

MIN

>0,7MAX

>0,5

COM

A0037685

25 DC connection with relay output, electronic insert FEL64 DC

1 When bridged, the relay output works using NPN logic.2 Connectable load


Endress+Hauser 25


3 54

3 54

6 87

6 87

3 54

3

3

5

5

4

4

6 87

6

6

8

8

7

7

MAX

RD YE GN

MIN

A0033513

26 Behavior of switch output and signaling, electronic insert FEL64 DC


6.2.5 PFM output (electronic insert FEL67)• For connecting to the Nivotester FTL325P and FTL375P switching units from Endress

+Hauser• PFM signal transmission; pulse frequency modulation, superimposed on the power

supply along the two-wire cabling• Functional testing without level change:

• A functional test can be performed on the device using the test button on theelectronic insert.

• The functional test can also be prompted by disconnecting the supply voltage ortriggered directly by the Nivotester FTL325P and FTL375P switching unit.

Supply voltageU = 9.5 to 12.5 VDC

Pay attention to the following as per IEC/EN61010-1: Provide a suitable circuitbreaker for the device.

Power consumptionP ≤ 150 mW with Nivotester FTL325P or FTL375P

Behavior of output signal• OK status: MAX mode 150 Hz, MIN mode 50 Hz• Demand mode: MAX mode 50 Hz, MIN mode 150 Hz• Alarm: MAX/MIN mode 0 Hz


26 Endress+Hauser

Terminal assignment

>0,5

COM

MIN

MAX >0,7

– +

1

2

L- L+

!

!

7

33

37

d4

z4

8

34

38

d2

z2

z6 d6

.

-

1 2

A0036065

27 PFM output, electronic insert FEL67

7/ 8: Nivotester FTL325P 1 CH, FTL325P 3 CH input 133/ 34: Nivotester FTL325P 3 CH input 237/ 38: NivotesterFTL325P 3 CH input 3d4/ d2: Nivotester FTL375P input 1z4/ z2: Nivotester FTL375P input 2z6/ d6: Nivotester FTL375P input 3

Connection cable• Maximum cable resistance: 25 Ω per core• Maximum cable capacitance: < 100 nF• Maximum cable length: 1 000 m (3 281 ft)


Endress+Hauser 27


MAX

RD YE GN

MIN

1

1

1

1

1

2

2

2

2

2

L+

L+

L+

L+

L+

150 Hz

50 Hz

50 Hz

150 Hz

0 Hz

L-

L-

L-

L-

L-

A0037696

28 Switching behaviour and signaling, electronic insert FEL67


The MAX/MIN switch must be set in accordance with the application. Only then is itpossible to perform the functional test correctly.

6.2.6 2-wire NAMUR > 2.2 mA/< 1.0 mA (electronic insert FEL68)• For connecting to isolating amplifier as per NAMUR (IEC 60947-5-6), e. g. the

Nivotester FTL325N from Endress+Hauser• Signal transmission H-L edge 2.2 to 3.8 mA/ 0.4 to 3.8 mA as per IEC 60947-5-6

(NAMUR) on two-wire cable• Functional testing without level change. A functional test can be performed on the

device using the test button on the electronic insert or using the test magnet with thehousing closed.The functional test can also be triggered by interrupting the supply voltage or activateddirectly from the Nivotester FTL325N.

Supply voltageU = 8.2 VDC

Pay attention to the following as per IEC/EN61010-1: Provide a suitable circuitbreaker for the device.

Power consumptionNAMUR IEC 60947-5-6

Behavior of output signal• OK status: output current 2.2 to 3.8 mA• Demand mode: output current 0.4 to 1.0 mA• Alarm: output current 0.4 to 1.0 mA


28 Endress+Hauser

Terminal assignment

>0,5

COM

– +

MIN

MAX >0,7

IEC 60947-5-6

8,2 V DC NAMUR

1

2

L- L+ .

-

1 2

!

!

A0036066

29 2-wire NAMUR > 2.2 mA/< 1.0 mA, electronic insert FEL68


MAX

RD YE GN

MIN

1

1

1

1

1

2

2

2

2

2

L+

L+

L+

L+

L+

2.2...3.8 mA

0.4...1.0 mA

2.2...3.8 mA

0.4...1.0 mA

< 1.0 mA

L-

L-

L-

L-

L-

A0037694



When using the device with the electronic insert FEL68 (2-wire NAMUR), theBluetooth module must be ordered separately, including the required battery.

Product Configurator, order code for "Accessory mounted", option NG "Prepared forHeartbeat Verification + Monitoring + Bluetooth".


Endress+Hauser 29

6.2.7 Bluetooth module VU121 (optional)

Contains

FCC ID:IC:

A0039257

31 Bluetooth module VU121

• The Bluetooth module can be connected via the COM interface to the followingelectronic inserts: FEL61, FEL62, FEL64, FEL64 DC, FEL67, FEL68 (2-wire NAMUR).

• The Bluetooth module with battery is suitable for use in hazardous areas.• For energy-related reasons, the Bluetooth module requires a special battery when

operated with the 2-wire NAMUR electronics.



BatteriesThe battery is categorized as dangerous goods when transported by air and may notbe installed in the device when shipped.

Replacement batteries can be purchased from a specialist retailer. Only the followingtypes of AA 3.6 V lithium batteries made by the manufacturers listed below aresuitable as replacement batteries:• SAFT LS14500• TADIRAN SL-360/s• XENOENERGY XL-060F

Connecting the module

1. 2.

A0039242

32 Connecting the module

Connect the Bluetooth module with the COM interface in the electronic insert.


30 Endress+Hauser

6.2.8 LED module VU120 (optional)

A0039258

33 LED module

The bright LED display indicates the switch status or the alarm condition and can beconnected to the following electronic inserts: FEL62, FEL64, FEL64DC

Supply voltageU = 12 to 55 VDC, 19 to 253 VAC

Power consumptionU ≤ 0.7 W, < 6 VA

Current consumptionImax = 0.4 A

Connecting the module

A0033542

34 Connecting the LED module

1. Attach the connecting cable of the LED module to the connecting cables of the supplyvoltage. Use the wire end ferrules supplied.

2. Connect the wire end ferrules to the terminals of the measuring device.

3. Connect the LED module with the COM interface in the electronic insert.

6.2.9 Cable entryRequired tools• Flat-blade screwdriver (0.6 x 3.5 mm) for terminals• Torque spanner (8 Nm) for M20 cable gland


Endress+Hauser 31

1

2

3

!

ød

3.5

A0018023

35 Cable entry, electronic insert

1 M20 cable gland2 Conductor cross-section, 2.5 mm2 maximum (AWG14)3 Conductor cross-section, 4.0 mm2 maximum (AWG12)ød Nickel-plated brass 7 to 10.5 mm (0.28 to 0.41 in)ød Plastic 5 to 10 mm (0.2 to 0.38 in)ød Stainless steel 7 to 12 mm (0.28 to 0.47 in)

Secure the cable gland and tighten the union nut of the cable gland, 8 Nm (5.9 lbf ft)torque. Screw the enclosed cable glands into the housing with a torque of3.75 Nm (2.76 lbf ft).

6.3 Post-connection check Is the device or cable undamaged (visual inspection)?

Do the cables used comply with the requirements?

Do the mounted cables have adequate strain relief?

Are the cable glands mounted and firmly tightened?

Does the supply voltage match the specifications on the nameplate?

No reverse polarity, is terminal assignment correct?

If supply voltage is present, is the green LED lit?

Are all the housing covers installed and tightened?

Optional: Is the cover with securing screw tightened?

Operation options Liquiphant FTL51B

32 Endress+Hauser

7 Operation options

7.1 Overview of operation options

7.1.1 Operating concept• Operation with button and DIP switches on the electronic insert• Display with optional Bluetooth module and SmartBlue (app) via Bluetooth® wireless

technology• Indication of switching status and operational status with optional LED module (lights

visible from the outside)• For plastic housing and aluminum housing (standard and Ex d) in conjunction with the

DC-PNP and relay electronics• Ordering information: Product Configurator, order code for "Display; operation" option

"B"

7.1.2 Functional test using the button on the electronic insert

>0,5

COM

NL1

1

2

MIN

MAX >0,7

>0,5

1

2

MIN

MAX >0,7

A0037132

36 Position of button for functional test

The functional test must be performed when the device status is OK.Status OK: MAX safety and sensor free or MIN safety and sensor covered.

• Press the test button for at least 1 second (FEL61/62/64/64DC/67/68 electronicinserts)

• The output changes to the safety-oriented state - the functional test of the device takesplace

• Test duration at least 10 s or until the button is released if the button is pressed for> 10 s

• The device returns to normal operation if the internal test is successful

The LEDs flash one after another as a chaser light during the functional test.

If the housing cannot be opened during operation due to explosion protectionrequirements, e. g., EX d/XP), the functional test can also be performed from the outsideusing the test magnet (FEL62, FEL64 DC, FEL68). The functional test of the PFMelectronics (FEL67) and NAMUR electronics (FEL68) can be started at the NivotesterFTL325P/N.

Pay attention to the information in the Safety Manual for proof testing safetyequipment in accordance with SIL or WHG (German Water Resources Act).

1. Make sure no undesired switching processes are triggered!

2. Press the button "T" on the electronic insert for at least 1 s (e. g., with a screwdriver). The output changes from the OK status to demand mode.

Liquiphant FTL51B Operation options

Endress+Hauser 33

FEL61 switching behavior and signaling

YE YEGNRD GNRD

1.

2.>1 s

3.

MAX

MIN

K

(N)<3.8 mA

21L

K

(N)<3.8 mA

21L

K

(N)21LΔU

IL

K

(N)<3.8 mA

21L

K

(N)<3.8 mA

21L

K

(N)A

21L

A0039210

37 FEL61 switching behavior and signaling

A After the test button is pressed, the load is switched off for at least 10 seconds (I < 3.8 mA) even if the buttonis pressed for < 10 seconds. If the button is pressed for > 10 seconds, the load remains switched off(I < 3.8 mA) until the test button is released. The load is then switched on again.

FEL62 switching behaviour and signaling

YE YEGNRD GNRD

1.

2.>1 s

3.

MAX

MIN

K(L-)

<100 µA31L+

K

(L-)31L+ΔU

IL

K(L-)A

31L+

K(L-)31L+

<100 µA

K(L-)31L+

<100 µA

K(L-)31L+

<100 µA

A0039211

38 FEL62 switching behaviour and signaling

A After the test button is pressed, the DC-PNP output is switched off for at least 10 seconds (I < 100 µA) even ifthe button is pressed for < 10 seconds. If the button is pressed for > 10 seconds, the DC-PNP output remainsswitched off ((I < 100 µA) until the test button is released. The DC-PNP output is then switched on again.


34 Endress+Hauser

FEL64, FEL64DC switching behavior and signaling

1.

2.>1 s

3.

MAX

MIN

YEGNRD YEGNRD

3 4 5 6 7 8

3 4 5 6 7 8

3 4 5 6 7 8

3 4 5 6 7 8

3 4 5 6 7 8

3 4 5 6 7 8

A

A0039212

39 FEL64, FEL64DC switching behavior and signaling

A After the test button is pressed, the relay is de-energized for at least 10 seconds even if the button is pressedfor < 10 seconds. If the test button is pressed for > 10 seconds, the relay remains de-energized until the testbutton is released. The relay is then energized again.

FEL67 switching behaviour and signalingA distinction must be made between MAX and MIN operating modes in the case ofthe FEL67 electronic insert!

1.

2.>1 s

3.

MAX

YEGNRD YEGNRD

150 Hz12L+ L-

50 Hz12L+ L-

50 Hz12L+ L-

50 Hz12L+ L-

50 Hz12L+ L-

A12L+ L-

A0039213

40 FEL67 MAX switching behaviour and signaling

A After the test button is pressed, the output frequency is switched off for at least 10 seconds, 50 Hz, even if thebutton is pressed for < 10 seconds. If the button is pressed for > 10 seconds, the output frequency remains at50 Hz until the test button is released. The output frequency then returns to 150 Hz once again.

Liquiphant FTL51B Operation options

Endress+Hauser 35

1.

2.>1 s

3.

YEGNRD YEGNRD

50 Hz12L+ L-

150 Hz12L+ L-

150 Hz12L+ L-

150 Hz12L+ L-

150 Hz12L+ L-

A12L+ L-

MIN

A0039214

41 FEL67 MIN switching behaviour and signaling

A After the test button is pressed, the output frequency is switched off for at least 10 seconds, 150 Hz, even ifthe button is pressed for < 10 seconds. If the button is pressed for > 10 seconds, the output frequency remainsat 150 Hz until the test button is released. The output frequency then returns to 50 Hz once again.

The PFM frequency cannot be measured on site. It is therefore recommended to prooftest the functionality at the Nivotester FTL325P/FTL375P.

FEL68 switching behaviour and signaling

YE YEGNRD GNRD

1.

2.>1 s

3.

MAX

MIN

2.2 ... 3.5 mA 0.6 ... 1 mA

0.6 ... 1 mA

0.6 ... 1 mAA

0.4 … 1 mA

1 1

1 1

1 1

2

2

2

L+

L+

L+

2

2

2

L+

L+

L+

A0033543

42 NAMUR electronics switching behaviour and signaling

A After the test button is pressed, the current is 0.6 to 1 mA for at least 10 seconds even if the button is pressedfor < 10 seconds. If the button is pressed for > 10 seconds, the current remains at 0.6 to 1 mA until the testbutton is released. The current then returns to 2.2 to 3.5 mA.

7.1.3 Functional test of the electronic switch with a test magnetPerform functional test of the electronic switch without opening the device• Hold the test magnet against the marking on the nameplate on the outside• Simulation is possible in the case of the FEL62, FEL64, FEL64DC, FEL68 electronic

inserts

The functional test with the test magnet acts in the same way as pressing the test buttonon the electronic insert.


36 Endress+Hauser

Se

r. n

o.:

Ord

er

co

de

:

Ext.

ord

. cd

.:

A0033419

43 Functional test with test magnet

7.1.4 Heartbeat diagnostics and verification with Bluetooth®wireless technology

Access via Bluetooth® wireless technology

1 2

A0033411

44 Remote operation via Bluetooth® wireless technology

1 Smartphone or tablet with SmartBlue (app)2 Device with optional Bluetooth module

Bluetooth module VU121 (optional)Functions

• Connection via COM interface: Bluetooth module for device diagnostics via a smartphoneapp or tablet app

• Display the battery status via app when used with electronic insert FEL68 (NAMUR)• User guidance (wizard) for SIL/WHG proof testing• Visible in the livelist 10 seconds after the Bluetooth search commences• Data can be read from the Bluetooth module 60 seconds after the supply voltage is

switched on• Display of the current vibration frequency and the switching state of the device

The yellow LED flashes when the Bluetooth module is connected to another Bluetoothdevice, e. g. mobile phone.

Heartbeat Technology

Heartbeat Technology module

Heartbeat DiagnosticsContinuously monitors and evaluates the device status and process conditions. Generatesdiagnostic messages when certain events occur and provides troubleshooting measures inaccordance with NAMUR NE 107.

Heartbeat VerificationPerforms a verification of the current device status upon request and generates aHeartbeat Technology verification report showing the result of the verification.

Heartbeat MonitoringContinuously provides device and/or process data for an external system. Analysis of thisdata forms the basis for process optimization and predictive maintenance.

Liquiphant FTL51B Commissioning

Endress+Hauser 37

Technical data

• Approval: intrinsically safe Ex ia, IS or ec/ic• NAMUR electronics (electronic insert FEL68):

For energy-related reasons, the Bluetooth module VU121 requires a special batterywhen operated with the 2-wire NAMUR electronics. The service life of the Bluetoothmodule without replacing the battery is at least 5 years with a maximum of 60downloads of complete datasets (at ambient temperatures between10 to 40 °C (50 to 104 °F)).

• Maximum free-field range 50 m (165 ft)• Operation radius with intervisibility 10 m (33 ft) around the device

For documentation on radio approvals, see the Endress+Hauser website:www.endress.com → Downloads.

7.2 LED module VU120 (optional)The LED module lights up very brightly and can be easily identified from a distance. It canbe connected to the following electronic inserts: FEL62, FEL64, FEL64 DC

Depending on either the MAX/MIN setting, the sensor status can be identified from theLEDs; displayed in the colors green, yellow and red.

The three colors of the LEDs flash one after another as a chaser light during the functionaltest.

7.2.1 Configuration and sensor statusLED shows a green light• MAX, sensor status: Not covered• MIN, sensor status: Covered

LED shows a yellow light• MAX, sensor status: Covered• MIN, sensor status: Not covered

LED shows a red lightAlarm

LED flashes red• Warning• FEL62 overload/short-circuit or no communication

The three colors of the LEDs flash one after another as a chaser light during the functionaltest.

8 Commissioning

8.1 Function checkBefore commissioning the measuring point, check whether the post-installation and post-connection checks have been performed:

• "Post-installation check" checklist → 16• "Post-connection check" checklist → 31

Commissioning Liquiphant FTL51B

38 Endress+Hauser

8.2 Switching on the measuring deviceDuring the power-up time, the device output is in the safe state, or in the alarm state ifavailable.

FEL61, FEL62, FEL64, FEL64DC electronic inserts: The output is in the correct state for amaximum of 3 seconds after the device is switched on.

NAMUR FEL68 and PFM FEL67 electronic inserts: A functional test is always carried outwhen the device is switched on. The output is in the correct state after a maximum of 10seconds.

8.3 Establishing a connection via SmartBlue (app)

8.3.1 SmartBlue (app)

RequirementsDevice requirementsCommissioning via SmartBlue is only possible if a Bluetooth module is installed in thedevice.

System requirementsSmartBlue is available as a download from the Google Play Store for Android devices andfrom the iTunes Store for iOS devices• iOS devices: iPhone 4S or higher from iOS9.0; iPad2 or higher from iOS9.0; iPod Touch

5th generation or higher from iOS9.0• Devices with Android: from Android 4.4 KitKat and Bluetooth® 4.0

Initial passwordThe ID number (serial number) on the nameplate of the Bluetooth module is used as theinitial password when establishing the connection for the first time.

It is important to note the following if the Bluetooth module is removed from onedevice and installed in another device: all log-in data are only stored in the Bluetoothmodule and not in the device. This also applies to the password changed by the user.

Preparatory stepsNote down the ID number of the Bluetooth module. The ID number on the nameplate ofthe Bluetooth module is used as the initial password when establishing the connection forthe first time.

The high cover with the window must be used for devices that are operated with theBluetooth module.

ID:

_____________

_________

____________

XXX-XXXXXX

A0039040

Liquiphant FTL51B Commissioning

Endress+Hauser 39

Establishing a connection via SmartBlue (app)1. Scan the QR code or enter "SmartBlue" in the search field.

A0039186

45 Download link

2. Start SmartBlue.

3. Select device from livelist displayed.

4. Log-in: User name: admin

Password: ID number on the Bluetooth module

5. Tap the icons for more information.

After logging in for the first time, change the password!

Saving PDF reports

The PDF reports generated in the SmartBlue app are not automatically saved andmust therefore be actively saved on the smartphone or tablet.

Operation Liquiphant FTL51B

40 Endress+Hauser

9 Operation

9.1 Diagnostics menuThe following data can be read out via the optional Bluetooth module and the associatedEndress+Hauser SmartBlue app.

9.1.1 "Diagnostics" menu

Diagnostics

‣ Actual diagnostics

Actual diagnostics

Timestamp

‣ Event logbook

Diagnostics 1

Timestamp

Diagnostics 2

Timestamp

Diagnostics 3

Timestamp

Diagnostics 4

Timestamp

Diagnostics 5

Timestamp

9.1.2 "Application" menu

Application

‣ Operating mode

MIN/MAX setting

Density setting

Liquiphant FTL51B Operation

Endress+Hauser 41

Switching delay uncovered to covered

Switching delay covered to uncovered

‣ Output

Digital Output-Status

9.1.3 "System" menu

System

Electronic type

‣ Bluetooth configuration

BLE HW revision

‣ Information

Device tag

Serial number

Firmware version

Device name

Order code

Manufacturer

Manufacturer ID

ENP version

Operating time

Number of system starts

Time stamp of last proof test

Date of last proof test

Frequency at delivery status

Current frequency

Diagnostics and troubleshooting Liquiphant FTL51B

42 Endress+Hauser

Upper alarm frequency

Upper warning frequency

Lower alarm frequency

Battery status

Temperature

Min. electronics temperature

Max. electronics temperature

9.2 Heartbeat VerificationThe "Heartbeat Verification" module contains the Heartbeat Verification wizard whichcarries out the verification of the current device status and creates the HeartbeatTechnology verification report:• The wizard can be used via the SmartBlue app.• The wizard takes the user through the entire process of creating the verification report.• Displays the operating hours counter and the temperature drag indicator.• If the vibration frequency of the fork increases, a corrosion warning appears.• The order configuration of the air's vibration frequency is shown on the verification

report. An increased vibration frequency indicates corrosion. A reduced vibrationfrequency signals deposits or that the medium is covering the sensor. Deviationsbetween the current vibration frequency and the vibration frequency upon delivery canbe caused by the process temperature and process pressure.

9.3 Recurrent testing for SIL/WHG (German WaterResources Act) devices 1)

The "SIL Prooftest", "WHG Prooftest" and "SIL/WHG Prooftest" modules contain a wizard forrecurrent testing. This is required at appropriate intervals for the following applications:SIL (IEC61508/IEC61511), WHG (German Water Resources Act):• The wizard can be used via the SmartBlue app.• The wizard takes the user through the entire process of creating the verification report.• The verification report can be saved as a PDF file.

10 Diagnostics and troubleshootingThe device indicates warnings and faults via Bluetooth in the SmartBlue app and via theLEDs on the electronic insert. All the device warnings and faults are for informationpurposes only and do not have a safety function. The faults diagnosed by the device aredisplayed in the SmartBlue app in accordance with NE107. Depending on the diagnosticmessage, the device behaves as per a warning or fault condition.

The device behaves in accordance with NAMUR Recommendation NE131 "NAMURstandard device requirements for field devices for standard applications".

1) Only available for devices with SIL or WHG approval

Liquiphant FTL51B Diagnostics and troubleshooting

Endress+Hauser 43

If using NAMUR electronics, change or insert the battery in the Bluetooth module.

10.1 Diagnostic information via light emitting diodes

10.1.1 LED at electronic insertLED green not litPossible cause: No power supplyTroubleshooting: Check plug, cable and power supply

LED flashes redPossible cause: Overload or short-circuit in load circuitTroubleshooting: Clear the short-circuitReduce maximum load current to below 350 mA

LED red continuously litPossible cause: Internal sensor error or electronic faultTroubleshooting: Replace device

10.1.2 SmartBlueDevice is not visible in the live listPossible cause: No Bluetooth connection availableThe device is already connected to another smartphone or tabletNo cable is connected to the Bluetooth moduleTroubleshooting:• Connect the Bluetooth module to the COM interface• Enable Bluetooth function on smartphone or tablet• If using NAMUR electronics, change or insert the battery in the Bluetooth module

Device is visible in the live list but cannot be accessed via SmartBlue• Possible cause on Android end device

Troubleshooting:• Check whether the location function is enabled for the app• Check whether the location function for the app was approved the first time• GPS or positioning function must be activated for certain Android versions in

conjunction with Bluetooth®• Activate GPS, close the app fully and restart, enable the positioning function for the

app• Possible cause on Apple end device

Troubleshooting:• Log in as normal• Enter the user name: admin• Enter initial password (serial number of Bluetooth module), paying attention to lower/

upper case

Login via SmartBlue not possiblePossible cause: Device is being put into operation for the first timeTroubleshooting: Enter initial password (ID number of Bluetooth module) and change it,paying attention to lower/upper case.

No communication with device via SmartBlue• Possible cause: Incorrect password entered

Troubleshooting: Enter correct password• Possible cause: Forgotten password

Troubleshooting: Contact Endress+Hauser Service

Maintenance Liquiphant FTL51B

44 Endress+Hauser

11 MaintenanceNo special maintenance work is required.

11.1 Maintenance tasks

11.1.1 CleaningIt is not permitted to use the device with abrasive media. Material abrasion on the tuningfork can result in the device malfunctioning.

• Clean the tuning fork as necessary• Cleaning is also possible in the installed state, e. g. CIP Cleaning in Place and SIP

Sterilization in Place

Liquiphant FTL51B Repair

Endress+Hauser 45

12 Repair

12.1 General information

12.1.1 Repair conceptEndress+Hauser repair concept• Measuring devices have a modular design• Customers can carry out repairs

For more information on service and spare parts, please contact your Endress+Hausersales representative.

12.1.2 Repair of Ex-certified devicesLWARNING

Limitation of electrical safety due to incorrect connection!Risk of explosion!‣ Only specialist personnel or the Endress+Hauser service team may carry out repairs on

Ex-certified devices.‣ Relevant standards and national regulations on hazardous areas, safety instructions

and certificates must be observed.‣ Use only original Endress+Hauser spare parts.‣ Please note the device designation on the nameplate. Only identical parts may be used

as replacements.‣ Carry out repairs according to the instructions. On completion of repair work, carry out

the routine test specified for the device.‣ Only the Endress+Hauser service team is permitted to modify a certified device and

convert it to another certified version.‣ All repairs and modifications must be documented.

12.2 Spare parts• Some replaceable measuring device components are identified by means of a spare part

nameplate. This contains information about the spare part.• All the spare parts for the measuring device along with the order code are listed in the

W@M Device Viewer (www.endress.com/deviceviewer) and can be ordered. If available,users can also download the associated Installation Instructions.

Measuring device serial number or QR code:Located on the device and spare part nameplate.

12.3 ReturnThe measuring device must be returned if the wrong device has been ordered or delivered.As an ISO-certified company and also due to legal regulations, Endress+Hauser is obligedto follow certain procedures when handling any returned products that have been incontact with medium. To ensure safe, swift and professional device returns, please refer tothe procedure and conditions for returning devices provided on the Endress+Hauserwebsite at http://www.endress.com/support/return-material

http://www.endress.com/deviceviewer

Repair Liquiphant FTL51B

46 Endress+Hauser

12.4 Disposal

If required by the Directive 2012/19/EU on waste electrical and electronic equipment(WEEE), our products are marked with the depicted symbol in order to minimize thedisposal of WEEE as unsorted municipal waste. Such products may not be disposed of asunsorted municipal waste and can be returned to Endress+Hauser for disposal atconditions stipulated in our General Terms and Conditions or as individually agreed.

Liquiphant FTL51B Accessories

Endress+Hauser 47

13 Accessories

13.1 Device-specific accessories

13.1.1 Test magnetOrder number: 71437508

A0039209

46 Test magnet

13.1.2 Weather protection cover for dual-compartment housing,aluminum

• Material: stainless steel 316L• Order number: 71438303

81 (3.19)

103 (4.06)

10

2.5

(4

.04

)

73

.5 (

2.8

9)

13

5 (

5.3

1)

229.4 (9.03)

136.7 (5.38)

Ø65 (2.56)

A0039231

47 Weather protection cover for dual-compartment housing, aluminum. Unit of measurement mm (in)

13.1.3 Weather protection cover for single-compartment housing,metal

• Material: plastic• Order number: 71438291

140 (5.51) 32 (1.26)

115 (4.53)

12

2 (

4.8

)

A0038280

48 Weather protection cover for single-compartment housing, metal. Unit of measurement mm (in)

Accessories Liquiphant FTL51B

48 Endress+Hauser

13.1.4 Plug-in jackThe plug-in jacks listed are suitable for use in the temperature range–25 to +70 °C (–13 to +158 °F).

Plug-in jack M12 IP69• Terminated at one end• Elbowed 90°• 5 m (16 ft) PVC cable (orange)• Slotted nut 316L (1.4435)• Body: PVC (orange)• Order number: 52024216

27

.5(1

.08

)40³

(1.57)

A0023713

49 Plug-in jack M12 IP69. Unit of measurement mm (in)

Plug-in jack M12 IP67• Elbowed 90°• 5 m (16 ft)PVC cable (gray)• Slotted nut Cu Sn/Ni• Body: PUR (blue)• Order number: 52010285

27

.5

(1.0

8)

40³

(1.57)

A0022292

50 Plug-in jack M12 IP67. Unit of measurement mm (in)

13.1.5 Additional modulesIf the Liquiphant is retrofitted with the Bluetooth module or the LED module, it is alsonecessary to order a tall housing cover with sight glass. The cover depends on thehousing and approval of the device.

More detailed information is available:• Product Configurator on the Endress+Hauser webpage: www.endress.com• Endress+Hauser Sales Center www.addresses.endress.com


Endress+Hauser 49

Bluetooth module VU121 (optional)

Contains

FCC ID:IC:

A0039257

51 Bluetooth module VU121

The Bluetooth module can be connected to the following electronic inserts via the COMinterface: FEL61, FEL62, FEL64, FEL64DC, FEL67, FEL68 (NAMUR 2-wire).

• Bluetooth module with battery for use in conjunction with NAMUR electronics FEL68electronic insertOrder number: 71437381

• Bluetooth module without battery for use in conjunction with FEL61, FEL62, FEL64,FEL64DC and FEL67 electronic insertsOrder number: 71437383



LED module VU120 (optional)

A0039258

52 LED module

The bright LED display indicates the switch status or the alarm condition and can beconnected to the following electronic inserts: FEL62, FEL64, FEL64DC

Order number: 71437382

13.1.6 Sliding sleeves for unpressurized operationSwitch point, infinitely adjustable.

Accessories Liquiphant FTL51B

50 Endress+Hauser

22

(0.8

7)

18

(0.7

1)

G 1 A

(1 NPT)G 1½ A

(1½ NPT)

M6 (3x)

1

M6 (3x)

19

(0.7

5)

19

(0.7

5)

5555

A0037666

53 Sliding sleeves for unpressurized operation. Unit of measurement mm (in)

1 pe = 0 bar (0 psi)

G 1, DIN ISO 228/I• Material: 1.4435 (AISI 316L)• Weight: 0.21 kg (0.46 lb)• Order number: 52003978• Order number: 52011888, approval: with inspection certificate EN 10204 - 3.1 material

NPT 1, ASME B 1.20.1• Material: 1.4435 (AISI 316L)• Weight: 0.21 kg (0.46 lb)• Order number: 52003979• Order number: 52011889, approval: with inspection certificate EN 10204 - 3.1 material

G 1½, DIN ISO 228/I• Material: 1.4435 (AISI 316L)• Weight: 0.54 kg (1.19 lb)• Order number: 52003980• Order number: 52011890, approval: with inspection certificate EN 10204 - 3.1 material

NPT 1½, ASME B 1.20.1• Material: 1.4435 (AISI 316L)• Weight: 0.54 kg (1.19 lb)• Order number: 52003981• Order number: 52011891, approval: with inspection certificate EN 10204 - 3.1 material

13.1.7 High pressure sliding sleeves• Switch point, infinitely adjustable• For use in hazardous areas,• Seal package made of graphite• For G 1, G 1½: seal included in delivery


Endress+Hauser 51

G 1 A

(1 NPT)G 1½A

(1½ NPT)

ø60 (2.36)

~7

2(2

.83

)

~7

07

6(2

.)

22

(0.8

7)

2(0

.08

)

2(0

.08

)

ø60 (2.36)

18

71

(0.

)

5050

A0037667

54 High pressure sliding sleeves. Unit of measurement mm (in)

G 1, DIN ISO 228/I• Material: 1.4435 (AISI 316L)• Weight: 1.13 kg (2.49 lb)• Order number: 52003663• Order number: 52011880, approval: with inspection certificate EN 10204 - 3.1 material

G 1, DIN ISO 228/I• Material: AlloyC22• Weight: 1.13 kg (2.49 lb)• Approval: with inspection certificate EN 10204 - 3.1 material• Order number: 71118691

NPT 1, ASME B 1.20.1• Material: 1.4435 (AISI 316L)• Weight: 1.13 kg (2.49 lb)• Order number: 52003667• Order number: 52011881, approval: with inspection certificate EN 10204 - 3.1 material

NPT 1, ASME B 1.20.1• Material: AlloyC22• Weight: 1.13 kg (2.49 lb)• Approval: with inspection certificate EN 10204 - 3.1 material• Order number: 71118694

G 1½, DIN ISO 228/1• Material: 1.4435 (AISI 316L)• Weight: 1.32 kg (2.91 lb)• Order number: 52003665• Order number: 52011882, approval: with inspection certificate EN 10204 - 3.1 material

G 1½, DIN ISO 228/1• Material: AlloyC22• Weight: 1.32 kg (2.91 lb)• Approval: with inspection certificate EN 10204 - 3.1 material

NPT 1½, ASME B 1.20.1• Material: 1.4435 (AISI 316L)• Weight: 1.32 kg (2.91 lb)• Order number: 52003669• Order number: 52011883, approval: with inspection certificate EN 10204 - 3.1 material

NPT 1½, ASME B 1.20.1• Material: AlloyC22• Weight: 1.32 kg (2.91 lb)• Approval: with inspection certificate EN 10204 - 3.1 material• Order number: 71118695

Technical data Liquiphant FTL51B

52 Endress+Hauser

14 Technical data

14.1 Input

14.1.1 Measured variableLevel (point level), MAX or MIN safety

14.1.2 Measuring rangeDepends on the installation location and the pipe extension orderedMaximum sensor length 6 m (20 ft)

14.2 Output

14.2.1 Output and input variants

Electronic inserts2-wire AC (FEL61)• Two-wire AC version• Switches the load directly into the power supply circuit via an electronic switch.

3-wire DC-PNP (FEL62)• Three-wire DC version• Switches the load via the transistor (PNP) and separate connection, e. g. in conjunction

with programmable logical controllers (PLC)• Ambient temperature –60 °C (–76 °F), optionally available for order

Low-temperature electronic inserts are marked LT.

Universal current connection, relay output (FEL64)• Switches the loads via 2 potential-free changeover contacts• Ambient temperature –60 °C (–76 °F), optionally available for order


Direct current connection, relay output (FEL64DC)• Switches the load via 2 potential-free changeover contacts• Ambient temperature –60 °C (–76 °F), optionally available for order


PFM output (FEL67)• For separate switching device (Nivotester FTL325P, FTL375P)• PFM signal transmission; current pulses are superimposed on the power supply along

the two-wire cabling• Ambient temperature –52 °C (–62 °F), optionally available for order

The low-temperature electronic inserts are marked LT

2-wire NAMUR > 2.2 mA/< 1.0 mA (FEL68)• For separate switching device, e. g. Nivotester FTL325N• Signal transmission H-L edge 2.2 to 3.8/0.4 to 1.0 mA as per IEC 60917-5-6 (NAMUR)

on two-wire cable• Ambient temperature –52 °C (–62 °F), optionally available for order


2-wire density (FEL60D) for density measurementConnection to Density Computer FML621

For more information, see the Technical Information for density measuringtechnology.

Liquiphant FTL51B Technical data

Endress+Hauser 53

14.2.2 Output signal

Switch outputPreset switching times can be ordered. The following ranges can be ordered for point levelswitches without communication (AC two-wire, relays, DC-PNP, PFM, NAMUR):• 0.5 seconds when the fork is covered and 1.0 seconds when it is uncovered (factory

setting)• 0.25 seconds when the fork is covered and 0.25 seconds when it is uncovered (fastest

setting)• 1.5 seconds when the fork is covered and 1.5 seconds when it is uncovered• 5 seconds when the fork is covered and 5 seconds when it is uncovered

COM interfaceFor connecting to modules VU120 or VU121 (no modifying effect)

Bluetooth® wireless technology (optional)

The device has a Bluetooth® wireless technology interface. Device data and diagnostic datacan be read out using the free "SmartBlue" app.

14.2.3 Ex connection dataSee safety instructions (XA): All data relating to explosion protection are provided inseparate Ex documentation and are available from the Downloads Area of theEndress+Hauser-website. The Ex documentation is supplied as standard with all Exdevices.

14.3 Environment

14.3.1 Ambient temperature range–40 to +70 °C (–40 to +158 °F)

LWARNINGPermitted connection voltage exceeded!‣ For electrical safety reasons, the maximum connection voltage for all electronic inserts

at ambient temperatures below –40 °C (–40 °F) is limited to a maximum of 35 V DC.

Optional–60 °C (–76 °F) or –52 °C (–62 °F)

In the hazardous area, the permitted ambient temperature can be limited depending onthe zones and gas groups. Pay attention to the information in the Ex documentation (XA).

The minimum permitted ambient temperature of the plastic housing is limited to–20 °C (–4 °F); "indoor use" applies in North America.


54 Endress+Hauser

Tp+150

+302

+120

+248

+90

+194

+60

+140

+30

+86

0

32

-30

-22

-60

-76

70158

60140

50122

40104

3086

2068

1050

032

A

B

[°C]

[°C]

[°F]

[°F]

Ta

A0037923

55 Permitted ambient temperature Ta at the housing as a function of the process temperature Tp in the vessel:

A Device without LED module; at process temperature Tp > 90°, with FEL64 and max. load current 4 AB Device with LED module; at process temperature and FEL64 Tp > 90° max. load current 2 A

For devices with a temperature spacer, the following ambient temperatures apply acrossthe entire process temperature range:A: 70 °CB: 60 °C

Ordering information:• Product Configurator, order code for "output", option "1"

Ambient temperature –60 °C (–76 °F), optionally available for order• Product Configurator, order code for "output", option "2"

Ambient temperature –52 °C (–62 °F), optionally available for order.


• Bluetooth module (non-Ex): –40 to +85 °C (–40 to +185 °F)• Bluetooth module (Ex ia): –40 to +65 °C (–40 to +149 °F), T4• LED module: –40 to +60 °C (–40 to +140 °F)

Outdoor operation in strong sunlight:• Mount the device in the shade.• Avoid direct sunlight, particularly in warmer climatic regions.• Use a weather protection cover, which can be ordered as an accessory

14.3.2 Storage temperature–40 to +80 °C (–40 to +176 °F)optional: –52 °C (–62 °F), –60 °C (–76 °F)

14.3.3 HumidityOperate up to 100 %. Do not open in a condensing atmosphere.


Endress+Hauser 55

14.3.4 Operating altitudeAs per IEC 61010-1 Ed.3:• Up to 2 000 m (6 600 ft) above sea level• Can be extended to 3 000 m (9 800 ft) above sea level if overvoltage protection is used

14.3.5 Climate classAs per IEC 60068-2-38 test Z/AD

14.3.6 Degree of protectionFor housing with electrical connection

M20 coupling, plastic• Single-chamber, plastic: IP66/67 NEMA type 4X• Single-chamber and dual-chamber, aluminum: IP66/68 NEMA type 4X/6P• Single-chamber 316L, cast: IP66/68 NEMA type 4X/6P

M20 coupling, nickel-plated brassSingle-chamber and dual-chamber, aluminum: IP66/68 NEMA type 4X/6P

M20 coupling, 316L• Single-chamber and dual-chamber, aluminum: IP66/68 NEMA type 4X/6P• Single-chamber 316L, cast: IP66/68 NEMA type 4X/6P

Thread M20• Single-chamber, plastic: IP66/67 NEMA type 4X• Single-chamber and dual-chamber, aluminum: IP66/68 NEMA type 4X/6P• Single-chamber 316L, cast: IP66/68 NEMA type 4X/6P

Thread G ½• Single-chamber, plastic: IP66/67 NEMA type 4X• Single-chamber and dual-chamber, aluminum: IP66/68 NEMA type 4X/6P• Single-chamber 316L, cast: IP66/68 NEMA type 4X/6P

Thread NPT ½• Single-chamber, plastic: IP66/67 NEMA type 4X• Single-chamber 316L, cast: IP66/68 NEMA type 4X/6P

Thread NPT ¾• Single-chamber and dual-chamber, aluminum: IP66/68 NEMA type 4X/6P• Single-chamber 316L, cast: IP66/68 NEMA type 4X/6P

M12 plug• Single-chamber, plastic: IP66/67 NEMA type 4X• Single-chamber, aluminum: IP66/67 NEMA type 4X• Single-chamber 316L, cast: IP66/67 NEMA type 4X

14.3.7 Vibration resistanceAs per IEC60068-2-64-2009a(RMS) = 50 m/s², f = 5 to 2 000 Hz , t = 3 planes x 2 h

For increased oscillations or vibrations, the additional option of order code "Application"option "B" 100 bar (1 450 psi) process pressure is recommended.

14.3.8 Shock resistanceAs per IEC60068-2-27-2008: 300 m/s² [=30 gn] + 18ms


56 Endress+Hauser

14.3.9 Mechanical load

Lateral loading capacity Special mounting instructions

14.3.10 Electromagnetic compatibility• Electromagnetic compatibility as per EN 61326 series and NAMUR recommendation

EMC (NE21).• The requirements of EN 61326-3-1 for the safety function (SIL) are fulfilled.

Details are available in the supplementary Functional Safety Manual.

14.4 Process

14.4.1 Process temperature range–50 to +150 °C (–58 to +302 °F)

Pay attention to the pressure and temperature dependence (see the "Sensor processpressure range" section )

14.4.2 Thermal shock≤ 120 K/s

14.4.3 Process pressure range

PN

Tp+150

+302

0

32

-50

-58

100

64

1450

928

032

[bar]

[°C]

[psi]

[°F]

1

A0038268

56 Process temperature FTL51B

1 Permitted pressure rating if the "100 bar (1 450 psi)" option is selected. For exceptions, see the "Processconnections" section. Canadian CRN approval: more details on the maximum pressure values are available inthe download area of the product page under "www.endress.com".


Endress+Hauser 57

LWARNINGThe maximum pressure for the measuring device is dependent on the lowest-ratedelement, with regard to pressure, of the selected components. This means that it isnecessary to pay attention to the process connection as well as the sensor.‣ For pressure specifications, see the "Mechanical construction" section.‣ The measuring device must be operated only within the specified limits!‣ The Pressure Equipment Directive (2014/68/EU) uses the abbreviation "PS". The

abbreviation "PS" corresponds to the MWP (maximum working pressure) of themeasuring device.

Permitted pressure values for flanges at higher temperatures can be found in the followingstandards:• pR EN 1092-1: 2005 With regard to its stability-temperature property, the material

1.4435 is identical to 1.4404, which is classed as 13E0 in EN 1092-1 Tab. 18. Thechemical composition of the two materials can be identical.

• ASME B 16.5• JIS B 2220

The lowest value from the derating curves of the device and of the selected flange appliesin each case.

Process pressure range of the sensors• PN: 64 bar (928 psi) at max. 150 °C (302 °F)

Ordering information: Product Configurator, order code for "Application" option "A"• PN: 100 bar (1 450 psi) at max. 150 °C (302 °F)

Ordering information: Product Configurator, order code for "Application" option "B"

14.4.4 Test pressure

Gauge pressure• PN = 64 bar (928 psi): test pressure = 1.5 · PN maximum 100 bar (1 450 psi) depending

on process connection selected• Membrane burst pressure at 200 bar (2 900 psi)

• PN = 100 bar (1 450 psi): test pressure = 1.5 · PN maximum 150 bar (2 175 psi)depending on process connection selected

• Membrane burst pressure at 400 bar (5 800 psi)

The instrument function is limited during the pressure test.

The mechanical integrity is guaranteed at pressures up to 1.5 times the process nominalpressure (PN).

14.4.5 Density• Switch position > 0.7 g/cm3 = order configuration

Standard setting for liquids with a density > 0.7 g/cm3

• Switch position > 0.5 g/cm3 = can be configured via DIP switchFor liquids with a density > 0.5 g/cm3 to < 0.8 g/cm3

• Order option: 0.4 g/cm3 (not for devices with SIL)For liquids with a density > 0.4 g/cm3 and density < 0.6 g/cm3

If this option has been selected, the density setting is always set to 0.4 g/cm3. Thissetting can no longer be altered.


58 Endress+Hauser

14.4.6 Pressure tightnessUp to vacuum

In vacuum evaporation systems, the density of the liquids can drop to a very low value:select density setting 0.4.

14.5 Additional technical dataSee Technical Documentation TI01403F/00/EN.

Liquiphant FTL51B Index

Endress+Hauser 59

Index

AAccess via Bluetooth® wireless technology . . . . . . . . . 36

CCE mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

DDeclaration of Conformity . . . . . . . . . . . . . . . . . . . . . . 7Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

IIdentifying the measuring device . . . . . . . . . . . . . . . . . 9Incoming acceptance . . . . . . . . . . . . . . . . . . . . . . . . . . 9

NNameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

OOperational safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

PPost-connection check . . . . . . . . . . . . . . . . . . . . . . . . 31Product safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

RRepair concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Requirements for the personnel . . . . . . . . . . . . . . . . . . 6Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

SSpare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

WW@M Device Viewer . . . . . . . . . . . . . . . . . . . . . . 9, 45Workplace safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

www.addresses.endress.com

*71440978*71440978

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